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The Electromagnetic compatibility - Generic standards series currently consist of the following parts:
——GB/T 17799.1-2017 Electromagnetic compatibility - Generic standards - Immunity for residential, commercial and light-industrial environments
——GB/T 17799.2-2003 Electromagnetic compatibility - Generic standards - Immunity for industrial environments
——GB 17799.3-2012 Electromagnetic compatibility (EMC) - Generic standards - Emission standard for residential, commercial and light-industrial environments
——GB 17799.4-2012 Electromagnetic compatibility (EMC) - Generic standards - Emission standard for industrial environments
——GB/T 17799.5-2012 Electromagnetic compatibility (MEC) - Generic standards - HEMP immunity for indoor equipment
This is part 1 of GB/T 17799.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 17799.1-1999 Electromagnetic compatibility - Generic Standards - Immunity for residential, commercial and light-industrial environments.
The following main changes have been made with respect to GB/T 17799.1-1999:
——The Clause 4 "Description of locations" in previous standard is deleted, with the contents in it combined into Clause 1 of this standard;
——Four terms, namely, "signal port", "power port", "long distance lines" and "low voltage" are added to Clause 3 “Terms and definitions”, and the term "functional earth port" in Clause 3 of previous standard is deleted;
——In “Table 1 Immunity - Enclosure port” of Clause 8 of this standard, the "Radio-frequency electromagnetic field - Keyed carrier” in Table 1 of Clause 9 of the previous standard is deleted, and the “Radio-frequency electromagnetic field - Amplitude modulated” with a test specification of 1.4 GHz~2.7 GHz is added;
——In “Table 1 Immunity - Enclosure port” of Clause 8 of this standard, the test specification “60 Hz” in “1.1 Power-frequency magnetic field” of Clause 9 of previous standard is deleted; and the test specifications and units of “4.2 Voltage dips” and “4.3 Voltage interruptions” in “Table 4 Immunity - Input and output AC power ports” are adjusted;
This part is modified in relation to the international standard IEC 61000-6-1: 2005 Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity for residential, commercial and light-industrial environments.
The technical differences between this part and IEC 61000-6-1: 2005 and their causes are as follows:
——As for the normative references, technical adjustments have been made in this part to adapt to the technical conditions of China, which are mainly reflected in Clause 2 "Normative references", with the corresponding international standards replaced with national standards equivalent to them; and GB/T 2900.83 Electrotechnical terminology - Electrical and magnetic devices is added;
——In Clause 8, the test specification "60 Hz" in the previous standard is deleted from 1.1 of “Table 1 Immunity - Enclosure port”; and the "30 cycles" in "4.2 Voltage dips” and "300 cycles” in "4.3 Voltage interruptions" of "Table 4 Immunity - Input and output AC power ports” are deleted. As 60 Hz is not adopted in the power frequency magnetic field immunity test in China, relevant parameters related to 60 Hz are deleted from this part.
The following editorial changes have also been made in this part:
——The name of this part is changed to Electromagnetic compatibility - Generic standards - Immunity for residential, commercial and light-industrial environments.
This part was proposed by and is under the jurisdiction of SAC/TC 246 the National Technical Committee on Electromagnetic Compatibility of Standardization Administration of China.
The previous edition replaced by this part is as follows:
——GB/T 17799.1-1999.
Electromagnetic compatibility - Generic standards - Immunity for residential, commercial and light-industrial environments
1 Scope
This part of GB/T 17799 for EMC immunity requirements applies to electrical and electronic equipment intended for use in residential, commercial and light-industrial environments. Immunity requirements in the frequency range 0 Hz to 400 GHz are covered. No tests need to be performed at frequencies where no requirements are specified.
This generic EMC immunity standard is applicable if no relevant dedicated product or product-family EMC immunity standard exists.
This part applies to equipment intended to be directly connected to a low-voltage public mains network or connected to a dedicated DC source which is intended to interface between the equipment and the low-voltage public mains network. This part applies also to equipment which is battery operated or is powered by a non-public, but non-industrial, low-voltage power distribution system if this equipment is intended to be used in the locations described below.
The environments encompassed by this part are residential, commercial and light-industrial locations, both indoor and outdoor. The following list, although not comprehensive, gives an indication of locations which are included:
——residential properties, for example houses, apartments;
——retail outlets, for example shops, supermarkets;
——business premises, for example offices, banks;
——areas of public entertainment, for example cinemas, public bars, dance halls;
——outdoor locations, for example petrol stations, car parks, amusement and sports centres;
——light-industrial locations, for example workshops, laboratories, service centres.
Locations which are characterised by being supplied directly at low voltage from the public mains network are considered to be residential, commercial or light-industrial.
The object of this part is to define the immunity test requirements for equipment specified in the scope in relation to continuous and transient, conducted and radiated disturbances including electrostatic discharges.
The immunity requirements have been selected in this part to ensure an adequate level of immunity for equipment at residential, commercial and light-industrial locations. The levels do not, however, cover extreme cases, which may occur at any location, but with an extremely low probability of occurrence. Not all disturbance phenomena have been included for testing purposes in this part but only those considered as relevant for the equipment covered by this part. These test requirements represent essential electromagnetic compatibility immunity requirements.
Notes:
1 Information on other disturbance phenomena is given in IEC 61000-4-1 [1].
Test requirements are specified for each port considered.
2 Safety considerations are not covered by this part.
3 In special cases, situations will arise where the levels of disturbances may exceed the test levels specified in this part; for example where a hand-held transmitter is used in proximity to an equipment. In these instances, special mitigation measures may have to be employed.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2900.83 Electrotechnical terminology - Electrical and magnetic devices (GB/T 2900.83-2008, IEC 60050-151: 2001, IDT)
GB/T 4365 Electrotechnical terminology - Electromagnetic compatibility (GB/T 4365-2003, IEC 60050 (161): 1990, IDT)
GB/T 9254 Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement (GB/T 9254-2008, IEC/CISPR 22: 2006, IDT)
GB/T 17626.2 Electromagnetic compatibility - Testing and measurement techniques - Electrostatic discharge immunity test (GB/T 17626.2-2006, IEC 61000-4-2: 2001, IDT)
GB/T 17626.3 Electromagnetic compatibility - Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test (GB/T 17626.3-2006, IEC 61000-4-3: 2002, IDT)
GB/T 17626.4 Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient/burst immunity test (GB/T 17626.4-2008, IEC 61000-4-4: 2004, IDT)
GB/T 17626.5 Electromagnetic compatibility - Testing and measurement techniques - Surge immunity test (GB/T 17626.5-2008, IEC 61000-4-5: 2005, IDT)
GB/T 17626.6 Electromagnetic compatibility - Testing and measurement techniques - Immunity to conducted disturbances, induced by radio-frequency fields (GB/T 17626.6-2008, IEC 61000-4-6: 2006, IDT)
GB/T 17626.8 Electromagnetic compatibility - Testing and measurement techniques - Power frequency magnetic field immunity test (GB/T 17626.8-2006, IEC 61000-4-8: 2001, IDT)
GB/T 17626.11 Electromagnetic compatibility - Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests (GB/T 17626.11-2008, IEC 61000-4-11: 2004, IDT)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 4365 and GB/T 2900.83 as well as the following definitions apply.
Note: Additional definitions related to EMC and to relevant phenomena are given in relevant national standards on EMC.
3.1
port
particular interface of the specified equipment with the external electromagnetic environment (see Figure 1)
Note: In some cases, different ports may be combined.
Figure 1 Examples of ports
3.2
enclosure port
physical boundary of the equipment which electromagnetic fields may radiate through or impinge on
3.3
cable port
port at which a conductor or a cable is connected to the equipment
Note: Examples are signal and power ports.
3.4
signal port
port at which a conductor or cable intended to carry signals is connected to the equipment
Note: Examples are analog inputs, outputs and control lines; data busses; communication networks etc.
3.5
power port
port at which a conductor or cable carrying the primary electrical power needed for the operation (functioning) of an equipment or associated equipment is connected to the equipment
3.6
public mains network
electricity lines to which all categories of consumers have access and which are operated by an electrical power supply and/or distribution organization for the purpose of supplying electrical energy
3.7
long distance lines
lines connected to a signal port and which inside a building are longer than 30 m, or which leave the building (including lines of outdoor installations)
3.8
low voltage
voltage having a value below a conventionally adopted limit
[GB/T 2900.83, definition 151-15-03]
Note: In case of distributing power for AC power systems, the upper limit is generally 1,000 V.
4 Performance criteria
The variety and the diversity of the equipment within the scope of this part make it difficult to define precise criteria for the evaluation of the immunity test results.
If, as a result of the application of the tests defined in this part, the equipment becomes dangerous or unsafe, the equipment shall be deemed to have failed the test.
A functional description and a definition of performance criteria, during or as a consequence of the test, shall be provided by the manufacturer and noted in the test report, based on one of the following criteria for each test as specified in Tables 1 to 4.
a) Performance criterion A
The equipment shall continue to operate as intended during and after the test. No degradation of performance or loss of function is allowed below a performance level specified by the manufacturer, when the equipment is used as intended. The performance level may be replaced by a permissible loss of performance. If the minimum performance level or the permissible performance loss is not specified by the manufacturer, either of these may be derived from the product description and documentation and what the user may reasonably expect from the equipment if used as intended.
b) Performance criterion B
The equipment shall continue to operate as intended after the test. No degradation of performance or loss of function is allowed below a performance level specified by the manufacturer, when the equipment is used as intended. The performance level may be replaced by a permissible loss of performance. During the test, degradation of performance is however allowed. No change of actual operating state or stored data is allowed. If the minimum performance level or the permissible performance loss is not specified by the manufacturer, either of these may be derived from the product description and documentation and what the user may reasonably expect from the equipment if used as intended.
c) Performance criterion C
Temporary loss of function is allowed, provided the function is self-recoverable or can be restored by the operation of the controls.
5 Conditions during test
The equipment under test (EUT) shall be tested in the expected most susceptible operating mode e.g. identified by performing limited pre-tests. This mode shall be consistent with normal applications. The configuration of the test sample shall be varied to achieve maximum susceptibility consistent with typical applications and installation practice.
If the equipment is part of a system, or can be connected to auxiliary equipment, the equipment shall be tested while connected to the minimum representative auxiliary equipment necessary to exercise the ports in a similar manner to that described in GB/T 9254.
In cases where a manufacturer's specification requires external protection devices or measures which are clearly specified in the user's manual, the test requirements of this standard shall be applied with the external protection devices or measures in place.
The configuration and mode of operation during the tests shall be precisely noted in the test report. It is not always possible to test every function of the equipment; in such cases the most critical mode(s) of operation shall be selected.
If the equipment has a large number of similar ports or ports with many similar connections, a sufficient number shall be selected to simulate actual operating conditions and to ensure that all the different types of termination are covered.
The tests shall be carried out within ranges of temperature, humidity and atmospheric pressure specified for the product and at the rated supply voltage, unless otherwise indicated in the basic standard.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Performance criteria
5 Conditions during test
6 Product documentation
7 Applicability
8 Immunity test requirements
Bibliography
